APRIL, 1922.] THE ORCHID REVIEW. 121 
at the various nodes ; little water-will be required as yet, sufficient only to 
keep the pseudobulbs plump and firm. After flowering, any repotting 
required may be done, as soon as new growth commences, ina mixture of 
osmunda fibre and sphagnum moss. D. Dalhousieanum is best grown in 
the warm house, as also D. fimbriatum and D. clavatum ; these also are 
showing their flower spikes, and providing the pseudobulbs do not show 
signs of shrivelling, little water will be required until new growth com- 
mences. D. Phalenopsis, D. bigibbum, and D. superbiens are very useful 
decorative Orchids; they have had a good season of rest since flowering in 
the autumn and are showing signs of new growth. Attention to repotting 
may now be done, previous to placing them in the growing quarters. 
Osmunda fibre and sphagnum, broken crocks, and a sprinkling of coarse 
silver sand will be found suitable. Use pans in preference to pots, and 
suspend them from the roof of a warm house. They grow freely enough in 
a close moist atmosphere, and make larger bulbs and leaves than those seen 
on imported plants, yet under such growing conditions they lack the solidity 
in texture indispensable to the free formation and development of flowers. 
The cause of their non-flowering is not through excess of heat, but to an 
over-humid atmosphere, with insufficient light and air, which enfeebles them. 
Giye them a position in the warm house with less atmospheric moisture, more 
air, and still more light during the growing season, with comparatively dry 
quarteis when atrest. This will be more in keeping with their requirements. 
C@LOGYNE TOMENTOSA, DAYANA, AND MASSANGEANA are commencing 
to grow, and will soon emit flower spikes from the young growth. Their 
long pendulous racemes are shown to better advantage when grown in 
baskets suspended. After flowering, they may be given fresh material to 
root in, and, if they have outgrown their receptacles, may be divided and 
placed in other baskets. C. pandurata and burfordensis are two other 
beautiful Coelogynes, and are much admired in flower at a later date. 
Oncipiums.—The autumn section, including varicosum, tigrinum, 
cheirophorum and ornithorynchum will soon need attention if repotting is 
required. A suitable compost consists of osmunda fibre, beech leaves, and 
sphagnum moss, with a fair proportion of crushed crocks intermixed to 
keep it open and porous. They will grow well at the warmest end of the 
cool house, and require less shading than the Odontoglossums. Oncidium 
macranthum, lamelligerum, and superbiens are other species which can be 
grown in this house ; they are now showing flower spikes in a more or less 
advanced condition. ©. concolor is another bright yellow species showing 
its spikes. It succeeds well if grown in pans suspended in the cool house 
during the summer months, giving slightly more warmth during the eoleet 
months. O, Papilio, Krameri, and bicallosum are best grown in the 
‘warmest house, and when in flower rarely fail to attract attention. 
